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Journal of ZheJiang University(Medical Science)  2012, Vol. 41 Issue (3): 234-238    DOI:
    
Measurement of facial bone wall thickness of maxillary anterior teeth and premolars on cone beam computed tomography images
SHEN Jian-wei1,HE Fu-ming1,JIANG Qiao-hong1,SHAN Hai-qin2
1.The Affiliated Stomatology Hospital,Zhejiang University School of Medicine,Hangzhou 310006,China; 2.Department of Stomatology,Second Hospital of Yinzhou,Ningbo 315100,China
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Abstract  Objective: To measure the thickness of facial bone wall of maxillary anterior teeth and premolars based on cone beam computed tomography (CBCT) images.
Methods: CBCT images from 118 patients were collected from the Affiliated Stomatology Hospital of Zhejiang University.The thickness perpendicular to the long axis of facial bone wall was measured at two locations: 4 mm apical to the cementoenamel junction (point 1) and the middle of the root (point 2).
Results: The thickness of the facial bone walls of central incisors,lateral incisors and canines ranged from 0.5 to 1.5 mm.A thin facial bone wall (﹤1.0 mm) was quite frequent in central incisors (44.1% at point 1,56.8% at point 2),lateral incisors (65.2% at point 1,89.8% at point 2) and canines (45.8% at point 1,61.0% at point 2).In contrast,the majority of examined first premolars (77.1% at point 1,68.7% at point 2) and second premolars (94.1% at point 1,94.1% at point 2) exhibited a thick facial bone wall (≥1.0 mm).
Conclusions: A thin facial bone wall of teeth in the anterior maxilla is common.Radiographic analysis of facial bone wall using CBCT is recommended for selection of appropriate treatment approach.


Key wordsDental implantation; Bicuspid/anatomy &      histology; Lip/anatomy &      histology; Maxilla/anatomy &      histology; Esthetics; Cone-beam computed tomography; Treatment outcome     
Published: 25 May 2012
Cite this article:

. Measurement of facial bone wall thickness of maxillary anterior teeth and premolars on cone beam computed tomography images. Journal of ZheJiang University(Medical Science), 2012, 41(3): 234-238.

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http://www.zjujournals.com/med/     OR     http://www.zjujournals.com/med/Y2012/V41/I3/234


上颌前牙与前磨牙唇侧骨壁厚度的CBCT测量分析

目的:通过锥形术射线计算机控制断层扫描(cone beam computed tomography,CBCT)测量分析,研究上颌前牙区及前磨牙区各个位点的唇侧骨壁厚度,为上颌前牙与前磨牙的种植修复提供一定的参考依据。
方法:选取浙江大学附属口腔医院118例患者的CBCT资料,测量上颌前牙区和前磨牙区各受测牙在釉牙骨质界根方4 mm处(位点1)和牙根中点处(位点2)的唇侧骨壁在与牙长轴垂直方向上的厚度。
结果:中切牙、侧切牙和尖牙的唇侧骨壁厚度大多集中在0.5~1.5 mm,其在位点1处唇侧骨壁厚度不足1.0 mm的分别达到了44.1%、65.2%和45.8%,位点2处唇侧骨壁厚度不足1.0 mm的分别达到了56.8%、89.8%和61.0%;而第一前磨牙和第二前磨牙的唇侧骨壁厚度大多在1.0 mm以上,分别达到了77.1%和94.1%(位点1),68.7%和94.1%(位点2)。
结论:上颌前牙区唇侧骨壁厚度不足的情况普遍存在,建议使用CBCT等技术手段对上颌前牙区的种植患者进行严格的术前评估,选择合适的治疗方案,从而获得理想的美学效果与远期功能。

关键词: 牙种植,  双尖牙/解剖学和组织学,  唇/解剖学和组织学,  上颌骨/解剖学和组织学,  美学,  锥束计算机体层摄影术,  治疗结果 
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